摘要
电解水能够为我们提供清洁可持续的能源, 这对生态环境系 统大有裨益. 因此, 在电解水体系中, 开发新型有效的析氧催化剂迫 在眉睫. 本文首先通过自下而上的方法合成Au@ZIF-67, 再对其进 行控温处理得到纳米复合物Au@ZIF-67-500. 通过扫描电子显微 镜、透射电子显微镜、X射线光电子能谱和紫外光谱等一系列测 试手段揭示了材料的纳米结构形貌及其表面电子分布. 在 1.0 mol L−1 KOH电解液中, 利用三电极体系进行了电催化性能的 测试. 结果显示, 该纳米复合物在催化析氧反应过程中呈现出良好 的催化活性和较好的稳定性. 这一结果可以归功于三方面的协同 作用: 金纳米粒子的包覆、多孔结构和有效的热控制. 这种通过简 单方法制备的析氧催化剂对能量转换领域具有一定的借鉴意义.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (NSFC, 21901221 and 21671170), the Natural Science Foundation of Jiangsu Province (BK20190870), Changjiang Scholars Program of the Ministry of Education (Q2018270), Lvyangjinfeng Talent Program of Yangzhou and Six Talent Peaks Project of Jiangsu Province. The authors acknowledge the technical support from the Testing Centre of Yangzhou University and State Key Laboratory of Coordination Chemistry of Nanjing University.
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Zhu R conceived the experiments and wrote the paper; Zhang Y collected and analyzed the data; Ding J synthesized the materials and performed the measurements; Pang H supervised the project and contributed the funding. All authors discussed the results and commented on the manuscript.
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The authors declare that they have no conflict of interest.
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Experimental details and supporting data are available in the online version of the paper.
Rongmei Zhu received her PhD degree in inorganic chemistry from Georg-August-University Göttingen (2017). Currently, she is an associate professor at Yangzhou University. Her research interests focus on self-assembled coordination cages in supramolecular chemistry and multifunctional materials based on nanostructures.
Huan Pang received his PhD degree from Nanjing University (2011). He is now a university distinguished professor at Yangzhou University. In the past 10 years, his group has been engaged in the design and syntheses of functional nanomaterials, especially MOF-based materials. His research interests include the development of inorganic nanostructures and their applications in nanoelectrochemistry with a focus on energy devices.
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Zhu, R., Zhang, Y., Ding, J. et al. Thermo-induced nanocomposites with improved catalytic efficiency for oxygen evolution. Sci. China Mater. 64, 1556–1562 (2021). https://doi.org/10.1007/s40843-020-1587-3
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DOI: https://doi.org/10.1007/s40843-020-1587-3